McCallum had also worked matches for TNA and WWE when they were in the U.K., and had competed for the ROH World Championship in 2008.

ICW issued the following statement regarding McCallum’s passing on Twitter:

We are heartbroken to learn of the tragic death of ICW World Heavyweight Champion, Adrian ‘Lionheart’ McCallum. Adrian was a mainstay of ICW and British professional wrestling. Most importantly, he was our friend. His passing leaves a huge hole in the lives of those who knew him.

We here at Wrestlingnewsplus.com send our condolences out to the friends and family of Adrian McCallum.

“One day you will eat your last meal,
You will smell your last flower, you will hug your friend for the last time. You might not know it’s the last time, that’s why you must do everything you love with passion” #Afterlife@rickygervais

“One day you will eat your last meal,
You will smell your last flower, you will hug your friend for the last time. You might not know it’s the last time, that’s why you must do everything you love with passion